Universal Principles of Design, Revised and Updated
by William Lidwell, Kritina Holden, Jill Butler
Accessibility
Objects and environments should be designed to be usable, without modification, by as many people as possible.1
The principle of accessibility asserts that designs should be usable by people of diverse abilities, without special adaptation or modification. Historically, accessibility in design focused on accommodating people with disabilities. As knowledge and experience of accessible design increased, it became increasingly clear that many required “accommodations” could be designed to benefit everyone. There are four characteristics of accessible designs: perceptibility, operability, simplicity, and forgiveness.2
Perceptibility is achieved when everyone can perceive the design, regardless of sensory abilities. Basic guidelines ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access